Lantern.



PATENTED JULY 28, 1908.

F. A. SATTER LANTERN.

APPLICATION FILED PEB.7.1907.'

I5 14 INVENTOR:

WITNESSEg: /ggwaw- M UNITED STATES PATENT OFFICE.

FRANK A. SATTER, OF ROCHESTER, NEW YORK, ASSIGNOR TO PRITCHARD-STRON G COMPANY,

' OF ROCHESTER. NEW YORK. a

LANTERN.

Specification of Letters Patent.

Patented July 28,1908.

Application filed February 7, 1307. Serial No. 356,262.

useful. Improvements in Lanterns, of which the following is a specification.

This invention relates to lanterns and particularly to tubular lanterns of the cold blast variety.

The invention consists inthe combination of parts hereinafter described and claimed.

The object of the invention is to produce a lantern of good burning qualities and having power. to resist the effect of drafts or currents of air.

Fig. 2 is a vertical section on a plane at right angles to the plane of the line 2-2 ofFig. 1;

The invention in this lantern consists in the improved construction whereby currents of air blowing upon the lantern are caused to improve and not to decrease the burning qualities.

In the drawings, 1 is the oil tank, 2 is the gallery, 3 is the burner cone, 4 is the globe plate resting upon the burner cone, 5, 5 are the air tubes connected at their lower ends with the gallery 2 and at their upper ends with the collar 6 forming part of the head of the lantern. The upper end of the collar 6 is composed of an inturned flange, and the bottom of thecollar has attached to it a flange G b The perforations 7 ,Which may be in the flange 6, constitute an opening into the bottom of a chamber formed by the collar 6 and a tube 8 of cylindrical form, which is adapted to slide up and downin said collar. The top 'of the collar and the perforated bottom thereof form the guides for the movement of the tube 8. A cover or cap 9 is supported above the upper end of the tube 8 to protect it in the usual way. A spring 10 lies between the collar 6 and the tube 8, and

so engages them as to press the tube 8 down A convens ring to rest against the top of the collar 6.

he end 11 of said spring will act asa stop for the downward movement of the tube 8 when the arts are released from the globe 4. Around t 1e bottom edge of the tube 8 are a series of perforations 12, whereby air is admitted into said tube.

The parts thus far described have been known, and when they are employed without adjuncts, the lower edge of the tube h rests upon the u )per end of the globe 4, and the pressure of the spring 10 retains the globe in place upon the globe plate 4.

to distribute itself inside the tube 8 and the globe 4*, and will have a depressing ell'ect upon the flame. This invention resides in means for preventing this effect of a cross draft or blast of air.

To the bottom of the outer tube 8 is fixed an inncrtube 13 shorter than the tube 8 and having the outwardly turned bottom flange 14. A convenient way of fastening the parts together is to provide on the bottom edge of the tube 8 a series of tongues 15 which may pass through the slots in the flange l4, and when the tongues are bent will hold the two arts together. This particular construct ion 18 not essential, and any construction or connection of the'parts, whereby an air chamber or channel is formed between the tubes 13 and .8, so that air passing into the holes 12 will be directed upward through the tube 8, is in accordance with this invention.

In this exam do of this invention the tube 13 is cylindrica and with a bottom flange, but it is not intended to limit my claims to these constructions.

In the form of the device shown in the drawings the lower end of the tube 13 where it joins its flange 14 is adapted to press upon the shoulder, or upon the upper edge, of the globe 4 and the pressure of the spring 10 communicated through the tube 8 holds the globe upon the globe plate-4.

When the lantern is burning in quiet air, a column of heated air rises from the flame and passes up through the tubes 13 and 8 out through the openingsunder the cover 9; this In this case a cross draft of an entering the holes 12 tends sucks the air in through the openings 7 and down through the air tubes 5 to the gallery and burner cone. When the lantern is swung in the hand or a high wind blows against it, the air that passes under the cover into the tube 8 will be partly discharged through the openings 12 and will artly descend through the tube 13 on t e flame.

But some air will enter by the openings 7, pass down the air tubes and balance the pressure at the liame. Thetube i3 shields the interior from the incoming drafts common to all lanterns of the cold blast type that have a row of perforations in the globe tube 8 immediately above the globe, and the air entering said perforations is directed upwardly so that the draft of the lamp is not .liniinished but aided 1. In a tubular lantern, air tubes, a collar having an inturned top and having; perforations through its sides connecting with the upper ends of said air tubes, an outer tube inside said collar and passing thniugh the top thereol' and having perforations below said collar, and an inner tube insidethe first men tioned tube, the bottom of the space between the two tubes being closed and being below said perforations in'the outer tube.

2. In a tubular lantern, air tubes, a collar having 'pe'rlorations through its sides eonmeeting with the upper ends oi said air tubes, an outer tube inside said. collar having perforations below said collar and with said collar inclosing a space -losed at the top and open at the bottom, an inner tube inside said first mentioned tube, the bottom of the-space between the two tubes being; closed and being below said perforations in the outer tube.

3. In a tubular lantern, air tubes, a collar having an inturned top and having perforations through its sides connecting with the upper ends of said air tubes, a flange extending from the bottom of said collar, an outer tube inside said collar and passing through the top thereof and having perforations below said collar, whereby the collar and said tube form an air chamber closed at the top and open at the bottom, an inner tube inside said first mentioned tube, the bottom of the space between the two tubes being closed and being below the said perforations in the outer tube.

l. in a tubular lantern air tubes, a collar having perforations through its sides connecting with the upper ends of said air tubes, an outer tube inside said collar having perforations below said'collar and with said collar forming an air space closed at the top and open at the bottom, and an imperiorate inner tube inside said first mentioned tube and ttachcd thereto below the perforations in the latter, the'bottoni of the space between 1 the two tubes being closed. and being below the said perforations 1n the outer tube.

FRANK A. BATTER.

Witnesses D. GURNEE, L. THON. 

